Automatic Document Feeder - Panasonic DP-1510P Service Manual

6.2.

Automatic Document Feeder

The ADF (Automatic Document Feeder) automatically feeds paper into the unit, one original at a time.
Its main features are:
1. Place originals Face-Up
2. Correct Order Stacking (Collation Mode)
3. Paper Feed Mechanism with Pre Feed Roller
The following is the ADF Mechanical operation description.
6.2.1. Automatic Document Feeder
1. Initialization
The ADF begins its operation with the Eject phase in order to feed and eject any originals stuck inside
the ADF. The ADF Motor starts rotating Feed Roller (409), Exit Roller (316) and Ejecting the Original,
after a few seconds the Clutch (1141) reverses the rotation direction raising the Original Stopper to its
standby position.
2. Original Setting and Size Sensors
Place the original(s) face up on the ADF until the leading edge stops against the Original Stopper.
Adjust the Original Guides (332 & 335) to center the original on the ADF. The Original Stopper prevents
originals from skewing and multiple feeding. The Photo Sensor (604) for Original Detection detects the
presence of Originals on the ADF when the original(s) actuate NP Actuator (407) on the Lower Paper
Feed Guide (401). The two Sensors mounted on the SNS PC Board (134) which is installed in the
Original Tray (333, 327) are actuated by the Original Guides, their position determines the original's
width and 2 Photo Sensors (604) for Original Length detect the length of the original.
3. Feeding and Separation
When the Start button is pressed, the Clutch (1141) starts to rotate and uppers the Original Stopper,
causing the Pre Feed Roller (420) to apply a downwards pressure against the originals. After a few
seconds, the Clutch (1141) reverses the direction of rotation and the Pre Feed Roller is raised upwards
along with the Original Stopper. The upper original is fed to the Paper Feed Roller (679), and the
Separation Rubber (428) prevents multiple feeding.
4. Transmission and Ejection
The original is fed into the Feed Roller (409) and when the original actuates the Photo Sensor (604) for
Read Point and Eject, the Paper Feed Roller (679) stops rotating. The Photo Sensor (604) for Read
Point and Eject detects the scanning position and the Feed Roller (409) transports the original while
scanning. The Exit Roller (316) feeds and ejects the original out of the ADF. If there are additional
originals on the ADF, the next one is fed into the feeder.
5. Final Operation
After ejecting the last original on the ADF, the Clutch reverses the direction of rotation raising the
Original Stopper to its standby position.
Edition 2.0
316
DP-1510P/1810P
/1810F/2010E
APR 2002